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Picking the plastic for abrasion resistance
dieted by using the load-carrying-capacit)concept. Heat-Blast Erosion Effects on Reinforced Plastic Laminates. N. R. Miller and E. L. Strauss. SPB ,/ouvl&, V. 14, Feb. igj8, p. 37 -,- 4 pages. l’henolic-glass. silicone resin-glass, and triallyl cyanurate polyester-glass fabric laminates 7.
and an asbestos-phenolic laminate were evalnated among other specimens varying in thickness from 10 to 60 mils. Picking the Plastic for Abrasion Resistance. Jean Pierre Abbat. Prodwt Engineering, V. rg, no. 13, Mar. 31, 1958, p. IOj-107. (‘haracteristics of elastomers and rigid plastics that resist hest.
SURFACE TREATMENT AND
7.‘. Chemical Surface ‘Tveatmeut and Coatiqs Low-Temperature Nitriding of (Alloy) Structural Steels. R. 1. Mishkevich, I’. I. Solntsev, and A. \‘. Smirnov. Hewy Bra&her Translation No. 4046, 9 pp. (Abridged from J!letaZlovede~zw i Obrabotka Metallou, 1957~ no. I, Feb., p. 49-54.) Henry Brutcher, Altadena. Calif. Investigates possibility of nitriding steel below 400 ‘C instead of at 500-600 ‘C, without inducing temper brittleness in core, in the presence of ferrosilicon to increase the degree of dissociation of ammonia and with chromic anhydride to increase the surface temperature of the stock. Increase of Antifriction Properties of Steels by Chlorination. (in Russian) Iu. M. Vinogradov and N. S. Dombrovskaia. Akademiia Nauk SSSR, Izvestiia, Otdelenie Tekhnicheskikh Nauk, 1958, no. I, Jan., 1,. 128-130. Chlorination to reduce friction and wear of machine parts can be done in both gaseous media and in salt baths containing active Cl compounds. A sufficiently high temperature for interaction between Cl and metal is necessary. Pack Chromizing Method Hikes Heat, Wear, CorrosionResistanceonVaried Components. Maurice C. Commanday. WesternMetalwork~ng, v. 16, Jan. 1958, p. 46-48. Parts to be chromized are packed in a boxtype retort prior to being furnace heated. ,\ compound of kaolin or alumina diluent, ferrochromium, and NH41 is used and box is sealed by fusible silicate powder. The Mechanism of Sulfurization of CopperZinc Alloys. (in Polish) I,ucjan Czerski, Stanislaw _Mrowec, and Teodor Werber. .4rchiwum Hutnictwa, v. a, no. 4. 1957, p. 391-410 + I plate. Kinetics of sulfurization of Cu-Zn alloys with from I to 20% Zn in liquid S. With increasing concentrations of Zn in the alloy, the rate of sulfurization decreases. Phosphate and Waterglass Coating of Wire for Drawing. 1. M. Goncharov, I,. 1. Fudim, 1;. M. Lady-
FINISHING
zhenskaya, and 0. A. Ryabchikova. Hew> Brutcher Translation No. 4076, 10 pp. (From Stal’, v. 17, no. j, Igj7, p 464-46.5.) Hew Brutcher, Altadena, Calif. Comparison of waterglass and phosphate coatings. I:se of waterglass gave improved die life, greater drawing throughout, better plant conditions, and eliminated need for coppering; however the wire responds poorly to hot-clip galvanizing and wet drawing. Protecting Metals at High Temperatures. .Ilfred F. Hofstatter. Matevials in Design Ekrgineeviq, 1’. 47. Apr. 1958, p. r *,j-1x9. Ceramic coatings are particularly important because of their hardness and resistance to oxidation. Metallic coatings are characterized by their combination of wear and corrosion resistance. Special paints are easy to apply and can often be used at temperatures rivei,000 OF‘ 7 L. JIerhnniral ing
Szrvfac-e Treulment and Flnrsh-
Shot Peening. H. 0. Fuchs and Design, V. 30, Designer’s guide effects, and how
E. R. Hutchinson. Machz,w Feb. 6, 1958, p. 116-125. to the process, applications, and where to specify it.
Die Entfernbarkeit des Zunders van Stahlblechen. The Removabibty of Scale From Steel Plates. Wilhelm RBdeker and Max Wild. Stahl wnd Eisen, V. 78, no. L, Jan. 23, 19.58, p. ioo-ro3. Pickling, sand blasting, cleaning with burner, and natural weathering were used for the removal of scale from different steel plates. Preliminary Examination of the Blast Cleaning of Steel Work. (in Dutch) J, H. Zaat. Metalen, V. I 3. no. .j, Mar. rg, rg.58. p. 81-88. life of the blasting agent. 1)etermination of the splintering capacity. Exposure tests revealed no relationship between rusting and grain size of the blasting agent. The least rust was shown by specimens blasted with steel wire, sand, and Zr sand. Cleaning Letterpress Printing Surfaces by Ultrasonic Methods.
and an asbestos-phenolic laminate were evalnated among other specimens varying in thickness from 10 to 60 mils. Picking the Plastic for Abrasion Resistance. Jean Pierre Abbat. Prodwt Engineering, V. rg, no. 13, Mar. 31, 1958, p. IOj-107. (‘haracteristics of elastomers and rigid plastics that resist hest.
SURFACE TREATMENT AND
7.‘. Chemical Surface ‘Tveatmeut and Coatiqs Low-Temperature Nitriding of (Alloy) Structural Steels. R. 1. Mishkevich, I’. I. Solntsev, and A. \‘. Smirnov. Hewy Bra&her Translation No. 4046, 9 pp. (Abridged from J!letaZlovede~zw i Obrabotka Metallou, 1957~ no. I, Feb., p. 49-54.) Henry Brutcher, Altadena. Calif. Investigates possibility of nitriding steel below 400 ‘C instead of at 500-600 ‘C, without inducing temper brittleness in core, in the presence of ferrosilicon to increase the degree of dissociation of ammonia and with chromic anhydride to increase the surface temperature of the stock. Increase of Antifriction Properties of Steels by Chlorination. (in Russian) Iu. M. Vinogradov and N. S. Dombrovskaia. Akademiia Nauk SSSR, Izvestiia, Otdelenie Tekhnicheskikh Nauk, 1958, no. I, Jan., 1,. 128-130. Chlorination to reduce friction and wear of machine parts can be done in both gaseous media and in salt baths containing active Cl compounds. A sufficiently high temperature for interaction between Cl and metal is necessary. Pack Chromizing Method Hikes Heat, Wear, CorrosionResistanceonVaried Components. Maurice C. Commanday. WesternMetalwork~ng, v. 16, Jan. 1958, p. 46-48. Parts to be chromized are packed in a boxtype retort prior to being furnace heated. ,\ compound of kaolin or alumina diluent, ferrochromium, and NH41 is used and box is sealed by fusible silicate powder. The Mechanism of Sulfurization of CopperZinc Alloys. (in Polish) I,ucjan Czerski, Stanislaw _Mrowec, and Teodor Werber. .4rchiwum Hutnictwa, v. a, no. 4. 1957, p. 391-410 + I plate. Kinetics of sulfurization of Cu-Zn alloys with from I to 20% Zn in liquid S. With increasing concentrations of Zn in the alloy, the rate of sulfurization decreases. Phosphate and Waterglass Coating of Wire for Drawing. 1. M. Goncharov, I,. 1. Fudim, 1;. M. Lady-
FINISHING
zhenskaya, and 0. A. Ryabchikova. Hew> Brutcher Translation No. 4076, 10 pp. (From Stal’, v. 17, no. j, Igj7, p 464-46.5.) Hew Brutcher, Altadena, Calif. Comparison of waterglass and phosphate coatings. I:se of waterglass gave improved die life, greater drawing throughout, better plant conditions, and eliminated need for coppering; however the wire responds poorly to hot-clip galvanizing and wet drawing. Protecting Metals at High Temperatures. .Ilfred F. Hofstatter. Matevials in Design Ekrgineeviq, 1’. 47. Apr. 1958, p. r *,j-1x9. Ceramic coatings are particularly important because of their hardness and resistance to oxidation. Metallic coatings are characterized by their combination of wear and corrosion resistance. Special paints are easy to apply and can often be used at temperatures rivei,000 OF‘ 7 L. JIerhnniral ing
Szrvfac-e Treulment and Flnrsh-
Shot Peening. H. 0. Fuchs and Design, V. 30, Designer’s guide effects, and how
E. R. Hutchinson. Machz,w Feb. 6, 1958, p. 116-125. to the process, applications, and where to specify it.
Die Entfernbarkeit des Zunders van Stahlblechen. The Removabibty of Scale From Steel Plates. Wilhelm RBdeker and Max Wild. Stahl wnd Eisen, V. 78, no. L, Jan. 23, 19.58, p. ioo-ro3. Pickling, sand blasting, cleaning with burner, and natural weathering were used for the removal of scale from different steel plates. Preliminary Examination of the Blast Cleaning of Steel Work. (in Dutch) J, H. Zaat. Metalen, V. I 3. no. .j, Mar. rg, rg.58. p. 81-88. life of the blasting agent. 1)etermination of the splintering capacity. Exposure tests revealed no relationship between rusting and grain size of the blasting agent. The least rust was shown by specimens blasted with steel wire, sand, and Zr sand. Cleaning Letterpress Printing Surfaces by Ultrasonic Methods.